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class="octo-body"></path></svg></a><main class="main"><div class="main-inner"><div class="content-wrap"><div class="content"><div class="posts-expand"><article itemscope itemtype="http://schema.org/Article" class="post-block" lang="zh-CN"><link itemprop="mainEntityOfPage" href="http://www.zhengjiaao.cn/posts/1894473216.html"><span hidden itemprop="author" itemscope itemtype="http://schema.org/Person"><meta itemprop="image" content="/my-images/avatar.gif"><meta itemprop="name" content="宇宙小神特别萌"><meta itemprop="description" content="人生就是一次幸运的旅行！"></span><span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization"><meta itemprop="name" content="宇宙小神特别萌"></span><header class="post-header"><h1 class="post-title" itemprop="name headline">spring5-x-memcached</h1><div class="post-meta"><span class="post-meta-item"><span class="post-meta-item-icon"><i class="fa fa-calendar-o"></i> </span><span class="post-meta-item-text">发表于</span> <time title="创建时间：2020-01-03 16:14:50" itemprop="dateCreated datePublished" datetime="2020-01-03T16:14:50+08:00">2020-01-03</time> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="fa fa-calendar-check-o"></i> </span><span class="post-meta-item-text">更新于</span> <time title="修改时间：2020-07-20 18:37:55" itemprop="dateModified" datetime="2020-07-20T18:37:55+08:00">2020-07-20</time> </span><span id="/posts/1894473216.html" class="post-meta-item leancloud_visitors" data-flag-title="spring5-x-memcached" title="热度"><span class="post-meta-item-icon"><i class="fa fa-eye"></i> </span><span class="post-meta-item-text">热度：</span> <span class="leancloud-visitors-count"></span> <span>℃</span> </span><span class="post-meta-item" title="热度" id="busuanzi_container_page_pv" style="display:none"><span class="post-meta-item-icon"><i class="fa fa-eye"></i> </span><span class="post-meta-item-text">热度：</span> <span id="busuanzi_value_page_pv"></span> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="fa fa-comment-o"></i> </span><span class="post-meta-item-text">Valine：</span> <a title="valine" href="/posts/1894473216.html#comments" itemprop="discussionUrl"><span class="post-comments-count valine-comment-count" data-xid="/posts/1894473216.html" itemprop="commentCount"></span></a></span><br><span class="post-meta-item" title="本文字数"><span class="post-meta-item-icon"><i class="fa fa-file-word-o"></i> </span><span class="post-meta-item-text">本文字数：</span> <span>14k</span> </span><span class="post-meta-item" title="阅读时长"><span class="post-meta-item-icon"><i class="fa fa-clock-o"></i> </span><span class="post-meta-item-text">阅读时长 &asymp;</span> <span>13 分钟</span></span></div></header><div class="post-body" itemprop="articleBody"><meta name="referrer" content="no-referrer">spring5.x-memcached 此模块是从spring5x-base 基础模块扩展过来的 spring5x-base模块是一个非常干净的spring5.x+springMVC架构 如果没有搭建spring5x-base模块 ，请参考 [spring5x-base模块搭建](https://www.jianshu.com/p/8612404cf1d6)<h2 id="搭建项目"><a href="#搭建项目" class="headerlink" title="搭建项目"></a>搭建项目</h2><p><strong>基于spring5x-base 基础模块 新增功能：</strong></p><ul><li>1、xmemcached 依赖及配置</li><li>2、xmemcached 自定义工具类</li><li>3、使用</li></ul><a id="more"></a><p><strong>memcached-1.4.4 安装参考：</strong><br><a href="https://www.runoob.com/memcached/window-install-memcached.html" target="_blank" rel="noopener">https://www.runoob.com/memcached/window-install-memcached.html</a></p><p><strong>memcached 介绍：</strong><br>Memcached是一个自由开源的 ，高性能 ，分布式内存对象缓存系统。是一个简洁的key-value存储系统。Memcached是一种基于内存的key-value存储 ，用来存储小块的任意数据（字符串、对象）。这些数据可以是数据库调用、API调用或者是页面渲染的结果。</p><p><strong>ehcache,redis,memcached 缓存应用场景和比较：</strong><br><a href="https://blog.csdn.net/u013317475/article/details/80737384" target="_blank" rel="noopener">https://blog.csdn.net/u013317475/article/details/80737384</a></p><p><strong>TreeNMS是一款redis ，Memcache可视化客户端工具:</strong><br><a href="https://www.cnblogs.com/treesoft/p/6628514.html" target="_blank" rel="noopener">https://www.cnblogs.com/treesoft/p/6628514.html</a></p><h3 id="1、xmemcached-依赖及配置"><a href="#1、xmemcached-依赖及配置" class="headerlink" title="1、xmemcached 依赖及配置"></a>1、xmemcached 依赖及配置</h3><hr><p>pom.xml</p><figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">&lt;!--memcached java 客户端--&gt;</span></span><br><span class="line">      <span class="tag">&lt;<span class="name">dependency</span>&gt;</span></span><br><span class="line">          <span class="tag">&lt;<span class="name">groupId</span>&gt;</span>com.googlecode.xmemcached<span class="tag">&lt;/<span class="name">groupId</span>&gt;</span></span><br><span class="line">          <span class="tag">&lt;<span class="name">artifactId</span>&gt;</span>xmemcached<span class="tag">&lt;/<span class="name">artifactId</span>&gt;</span></span><br><span class="line">          <span class="tag">&lt;<span class="name">version</span>&gt;</span>2.4.6<span class="tag">&lt;/<span class="name">version</span>&gt;</span></span><br><span class="line">      <span class="tag">&lt;/<span class="name">dependency</span>&gt;</span></span><br></pre></td></tr></table></figure><p>memcached.properties</p><figure class="highlight properties"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">memcached.host</span>=<span class="string">127.0.0.1:11211</span></span><br></pre></td></tr></table></figure><p>spring-xmemcache.xml</p><figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">&lt;?xml version="1.0" encoding="UTF-8"?&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">beans</span> <span class="attr">xmlns</span>=<span class="string">" http://www.springframework.org/schema/beans"</span></span></span><br><span class="line"><span class="tag">       <span class="attr">xmlns:xsi</span>=<span class="string">" http://www.w3.org/2001/XMLSchema-instance"</span></span></span><br><span class="line"><span class="tag">       <span class="attr">xmlns:context</span>=<span class="string">" http://www.springframework.org/schema/c"</span></span></span><br><span class="line"><span class="tag">       <span class="attr">xsi:schemaLocation</span>=<span class="string">" http://www.springframework.org/schema/beans</span></span></span><br><span class="line"><span class="tag"><span class="string">        http://www.springframework.org/schema/beans/spring-beans.xsd"</span>&gt;</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">&lt;!--引入memcached配置--&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">context:property-placeholder</span> <span class="attr">location</span>=<span class="string">"classpath:memcached/memcached.properties"</span> <span class="attr">ignore-unresolvable</span>=<span class="string">"true"</span>/&gt;</span></span><br><span class="line"></span><br><span class="line">    <span class="tag">&lt;<span class="name">bean</span> <span class="attr">id</span>=<span class="string">"memcachedClientBuilder"</span> <span class="attr">class</span>=<span class="string">"net.rubyeye.xmemcached.XMemcachedClientBuilder"</span>&gt;</span></span><br><span class="line">        <span class="tag">&lt;<span class="name">constructor-arg</span> <span class="attr">name</span>=<span class="string">"addressList"</span> <span class="attr">value</span>=<span class="string">"$&#123;memcached.host&#125;"</span>/&gt;</span></span><br><span class="line">    <span class="tag">&lt;/<span class="name">bean</span>&gt;</span></span><br><span class="line"></span><br><span class="line">    <span class="tag">&lt;<span class="name">bean</span> <span class="attr">id</span>=<span class="string">"memcachedClient"</span> <span class="attr">factory-bean</span>=<span class="string">"memcachedClientBuilder"</span> <span class="attr">factory-method</span>=<span class="string">"build"</span></span></span><br><span class="line"><span class="tag">          <span class="attr">destroy-method</span>=<span class="string">"shutdown"</span>/&gt;</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">&lt;!-- 注入自定义工具类写的类 --&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">bean</span> <span class="attr">id</span>=<span class="string">"xMemcachedUtil"</span> <span class="attr">class</span>=<span class="string">"com.zja.util.XMemcachedUtil"</span>/&gt;</span></span><br><span class="line"></span><br><span class="line"><span class="tag">&lt;/<span class="name">beans</span>&gt;</span></span><br></pre></td></tr></table></figure><p>spring-mvc.xml</p><figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">&lt;!--xmemcache 配置--&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">import</span> <span class="attr">resource</span>=<span class="string">"classpath:memcached/spring-xmemcache.xml"</span>/&gt;</span></span><br></pre></td></tr></table></figure><h3 id="2、xmemcached-自定义工具类"><a href="#2、xmemcached-自定义工具类" class="headerlink" title="2、xmemcached 自定义工具类"></a>2、xmemcached 自定义工具类</h3><hr><p>XMemcachedUtil.java 自定义工具类(可选)</p><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span 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class="line">317</span><br><span class="line">318</span><br><span class="line">319</span><br><span class="line">320</span><br><span class="line">321</span><br><span class="line">322</span><br><span class="line">323</span><br><span class="line">324</span><br><span class="line">325</span><br><span class="line">326</span><br><span class="line">327</span><br><span class="line">328</span><br><span class="line">329</span><br><span class="line">330</span><br><span class="line">331</span><br><span class="line">332</span><br><span class="line">333</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.zja.util;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> net.rubyeye.xmemcached.GetsResponse;</span><br><span class="line"><span class="keyword">import</span> net.rubyeye.xmemcached.MemcachedClient;</span><br><span class="line"><span class="keyword">import</span> net.rubyeye.xmemcached.exception.MemcachedException;</span><br><span class="line"><span class="keyword">import</span> org.springframework.beans.factory.annotation.Autowired;</span><br><span class="line"><span class="keyword">import</span> org.springframework.util.StringUtils;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.util.concurrent.TimeoutException;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> <span class="keyword">static</span> java.util.Objects.isNull;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> ZhengJa</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@description</span> XMemcached 封装的工具类：说明 ，如果对XMemcachedClient有了解 ，可以使用MemcachedClient本身封装的方法</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@data</span> 2019/11/12</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">XMemcachedUtil</span> </span>&#123;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">private</span> MemcachedClient memcachedClient;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/*=================【1、更新缓存失效时间】===================*/</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 指定更新缓存失效时间</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key  键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> expiry 存储有效时间（秒） 0-永久存储</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@return</span> boolean  true/false --&gt; 成功/失败</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">expire</span><span class="params">(String key, <span class="keyword">int</span> expiry)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">boolean</span> touchResult = <span class="keyword">false</span>;</span><br><span class="line">        <span class="keyword">if</span> (expiry &gt; <span class="number">0</span>) &#123;</span><br><span class="line">            touchResult = memcachedClient.touch(key, expiry);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> touchResult;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/*=================【2、定义新增set/add方法】===================*/</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/** add: 当内存中已经有key存在 ，则会添加失败。如果内存中key不存在 ，则可以添加成功</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * 添加一个键值对到缓存中:时间不过期</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key   键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value 值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@return</span> boolean 若key存在-结果返回false ，key不存在返回true</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">add</span><span class="params">(String key, Object value)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> add(key, value, <span class="number">0</span>);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/** add: 当内存中已经有key存在 ，则会添加失败。如果内存中key不存在 ，则可以添加成功</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * 添加一个键值对到缓存中 ，并设置其超时时间</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key    键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value  值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> expiry 存储有效时间（秒） 0-永久存储</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@return</span> boolean 若key存在-结果返回false</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">add</span><span class="params">(String key, Object value, <span class="keyword">int</span> expiry)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> (StringUtils.isEmpty(key) || value == <span class="keyword">null</span>) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> IllegalArgumentException(<span class="string">"参数错误！"</span>);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.add(key, expiry, value);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/** set: 重复的set操作 ，会覆盖之前的值</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * 添加一个键值对到缓存中:永久存储 ,与and区别使：若key存在-更新value值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key   键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value 值</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">set</span><span class="params">(String key, Object value)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> set(key, value, <span class="number">0</span>);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/** set: 重复的set操作 ，会覆盖之前的值</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * 添加一个键值对到缓存中 ，与and区别使：若key存在-更新value值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key    键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value  值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> expiry 存储有效时间（秒） 0-永久存储</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">set</span><span class="params">(String key, Object value, <span class="keyword">int</span> expiry)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> (StringUtils.isEmpty(key) || value == <span class="keyword">null</span>) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> IllegalArgumentException(<span class="string">"参数错误！"</span>);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.set(key, expiry, value);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/*=================【3、定义更新replace方法】===================*/</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 更新数据：根据key 更新value值,时间不过期</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key   键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value 值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@return</span> boolean 更新结果</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">replace</span><span class="params">(String key, Object value)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> replace(key, value, <span class="number">0</span>);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 更新数据：根据key 更新value值</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key    键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value  值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> expiry 存储有效时间（秒） 0-永久存储</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@return</span> boolean 更新结果</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">replace</span><span class="params">(String key, Object value, <span class="keyword">int</span> expiry)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">boolean</span> replaceResult = <span class="keyword">false</span>;</span><br><span class="line">        Object cache = get(key);</span><br><span class="line">        <span class="keyword">if</span> (!isNull(cache)) &#123;</span><br><span class="line">            replaceResult = memcachedClient.replace(key, expiry, value);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> replaceResult;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/*=================【4、定义查询get/gets方法】===================*/</span></span><br><span class="line">    <span class="comment">/*gets对比get：gets返回的信息稍微多一些*/</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**get: 获取一个数据 ，如果写入时是压缩的或序列化的 ，则get的返回会自动解压缩及反序列化</span></span><br><span class="line"><span class="comment">     * 获取缓存数据：根据key获取 value 值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 缓存中的key</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">public</span> &lt;T&gt; <span class="function">T <span class="title">get</span><span class="params">(String key)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> (StringUtils.isEmpty(key)) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> IllegalArgumentException(<span class="string">"参数错误！"</span>);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.get(key);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 获取缓存数据并更新超时时间</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key  键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> time 存储有效时间（秒） 0-永久存储</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@return</span> boolean  true/false --&gt; 成功/失败</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">getAndTouch</span><span class="params">(String key, <span class="keyword">int</span> time)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">boolean</span> touchResult = <span class="keyword">false</span>;</span><br><span class="line">        <span class="keyword">if</span> (time &gt; <span class="number">0</span>) &#123;</span><br><span class="line">            touchResult = memcachedClient.getAndTouch(key, time);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> touchResult;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**gets : gets除了会返回缓存值外 ，还会返回当前缓存的版本号 ，一般是用于协同CAS完成原子操作使用</span></span><br><span class="line"><span class="comment">     * 获取缓存数据：根据key获取 value 值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 缓存中的key</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">public</span> &lt;T&gt; <span class="function">GetsResponse&lt;T&gt; <span class="title">gets</span><span class="params">(String key)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.gets(key);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/*=================【5、定义删除delete方法】===================*/</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 删除指定缓存：根据key删除</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 缓存中的key</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">delete</span><span class="params">(String key)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.delete(key);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 删除数据: 通过deleteWithNoReply方法 ，删除数据并且告诉memcached,不用返回应答 ，因此这个方法不会等待应答直接返回 ，特别适合于批量处理</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">deleteWithNoReply</span><span class="params">(String key)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        memcachedClient.deleteWithNoReply(key);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 清空全部缓存 cache ,谨慎使用 真正项目上禁用</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">flushAll</span><span class="params">()</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        memcachedClient.flushAll();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/*=================【6、定义数值操作incr/decr方法】===================*/</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 递增++ ：每次递增 1 ,永久存储</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键 若不存 ，默认初始值为0 ，递增因子1</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">long</span> <span class="title">incr</span><span class="params">(String key)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> <span class="keyword">this</span>.incr(key, <span class="number">1</span>);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 递增++ : 自定义递增因子大小,永久存储</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key   键 若不存 ，默认初始值为0 ，递增因子1</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> delta 递增因子必须大于0</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">long</span> <span class="title">incr</span><span class="params">(String key, <span class="keyword">long</span> delta)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> (delta &lt; <span class="number">0</span>) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> RuntimeException(<span class="string">"递增因子必须大于0"</span>);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.incr(key, delta);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 递增++ : 永久存储, 第一个参数指定递增的key名称 ，第二个参数指定递增的幅度大小 ，第三个参数指定当key不存在的情况下的初始值</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key   指定递增的key名称</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> delta 指定递增的幅度大小</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> initValue  指定当key不存在的情况下的初始值</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">long</span> <span class="title">incr</span><span class="params">(String key, <span class="keyword">long</span> delta, <span class="keyword">long</span> initValue)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> (delta &lt; <span class="number">0</span> || initValue &lt; <span class="number">0</span>) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> RuntimeException(<span class="string">"递增因子必须大于0"</span>);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.incr(key, delta, initValue);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 递减-- ：永久存储 ，每次递减 1</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">long</span> <span class="title">decr</span><span class="params">(String key)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.decr(key, <span class="number">1</span>);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 递减-- ：永久存储 ，指定递减值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> delta 递减因子</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">long</span> <span class="title">decr</span><span class="params">(String key, <span class="keyword">long</span> delta)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> (delta &lt; <span class="number">0</span>) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> RuntimeException(<span class="string">"递减因子必须大于0"</span>);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.decr(key, delta);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 递减-- ：永久存储 ，指定key、递减因子、初始值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> delta 递减因子</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> init 初始值 ，若key值不存在 ，以初始值递减</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">long</span> <span class="title">decr</span><span class="params">(String key, <span class="keyword">long</span> delta, <span class="keyword">long</span> init)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> (delta &lt; <span class="number">0</span>) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> RuntimeException(<span class="string">"递减因子必须大于0"</span>);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.decr(key, delta, init);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/*=================【7、定义append/prepend方法 】===================*/</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * append在原有的key的value的末尾追加值 ，如果key不存在 ，则追加失败</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value 末尾追加的值</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">append</span><span class="params">(String key,Object value)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.append(key,value);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * append在原有的key的value的末尾追加值 ，如果key不存在 ，则追加失败</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value 末尾追加的值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> l</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">append</span><span class="params">(String key,Object value,Long l)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.append(key,value,l);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * prepend在原有的value的头位置添加值,如果key不存在 ，则添加失败</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">prepend</span><span class="params">(String key,Object value)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.prepend(key,value);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * prepend在原有的value的头位置添加值,如果key不存在 ，则添加失败</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value 在头位置添加的值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> l 第几个位置添加</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">prepend</span><span class="params">(String key,Object value,Long l)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.prepend(key,value,l);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * prepend在原有的value的头位置添加值 ，不返回添加结果,如果key不存在 ，则添加失败</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> value 在头位置添加的值</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">prependWithNoReply</span><span class="params">(String key,Object value)</span> <span class="keyword">throws</span> MemcachedException, InterruptedException </span>&#123;</span><br><span class="line">        memcachedClient.prependWithNoReply(key,value);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/*=================【8、定义cas方法-解决并发情况 】===================*/</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 每次操作 ，cas的id都为递增,并且cas的key一定要存在 ，要不然会执行失败</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> key 键</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> expiry 时间</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> newValue 新值</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> cas  cas版本号,通过gets 结果集中获取cas</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">boolean</span> <span class="title">cas</span><span class="params">(String key, <span class="keyword">int</span> expiry, Object newValue,<span class="keyword">long</span> cas)</span> <span class="keyword">throws</span> InterruptedException, MemcachedException, TimeoutException </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> memcachedClient.cas(key,expiry,newValue,cas);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure><h3 id="3、使用"><a href="#3、使用" class="headerlink" title="3、使用"></a>3、使用</h3><hr><p>UserDTO.java</p><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.zja.entity;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.io.Serializable;</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">UserDTO</span> <span class="keyword">implements</span> <span class="title">Serializable</span></span>&#123;</span><br><span class="line">    <span class="keyword">private</span> String id;</span><br><span class="line">    <span class="keyword">private</span> String username;</span><br><span class="line">    <span class="keyword">private</span> Integer age;</span><br><span class="line"></span><br><span class="line">    <span class="function"><span class="keyword">public</span> String <span class="title">getId</span><span class="params">()</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> id;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">setId</span><span class="params">(String id)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">this</span>.id = id;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="function"><span class="keyword">public</span> String <span class="title">getUsername</span><span class="params">()</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> username;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">setUsername</span><span class="params">(String username)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">this</span>.username = username;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="function"><span class="keyword">public</span> Integer <span class="title">getAge</span><span class="params">()</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> age;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">setAge</span><span class="params">(Integer age)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">this</span>.age = age;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> String <span class="title">toString</span><span class="params">()</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> <span class="string">"UserDTO&#123;"</span> +</span><br><span class="line">                <span class="string">"id='"</span> + id + <span class="string">'\''</span> +</span><br><span class="line">                <span class="string">", username='"</span> + username + <span class="string">'\''</span> +</span><br><span class="line">                <span class="string">", age="</span> + age +</span><br><span class="line">                <span class="string">'&#125;'</span>;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure><p>XMemcachedController.java</p><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span 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class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.zja.controller;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.zja.entity.UserDTO;</span><br><span class="line"><span class="keyword">import</span> com.zja.util.XMemcachedUtil;</span><br><span class="line"><span class="keyword">import</span> net.rubyeye.xmemcached.MemcachedClient;</span><br><span class="line"><span class="keyword">import</span> org.springframework.beans.factory.annotation.Autowired;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.GetMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RequestMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RestController;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> ZhengJa</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@description</span> Memcached 缓存测试</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@data</span> 2019/11/12</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"></span><br><span class="line"><span class="meta">@RestController</span></span><br><span class="line"><span class="meta">@RequestMapping</span>(<span class="string">"rest/xmemcached"</span>)</span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">XMemcachedController</span> </span>&#123;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">private</span> MemcachedClient memcachedClient;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">private</span> XMemcachedUtil xMemcachedUtil;</span><br><span class="line"></span><br><span class="line">    <span class="comment">//操作字符串</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 字符串保存</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span></span></span><br><span class="line"><span class="comment">     * <span class="doctag">@return</span> java.lang.Object</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@GetMapping</span>(<span class="string">"save/str"</span>)</span><br><span class="line">    <span class="function"><span class="keyword">public</span> Object <span class="title">saveStr</span><span class="params">()</span> <span class="keyword">throws</span> Exception </span>&#123;</span><br><span class="line"></span><br><span class="line">        <span class="comment">//保存到Memcached缓存中</span></span><br><span class="line">        <span class="keyword">boolean</span> result = memcachedClient.set(<span class="string">"xmemcached"</span>, <span class="number">0</span>, <span class="string">"使用 xmemcached 存储数据"</span>);</span><br><span class="line">        </span><br><span class="line">        <span class="comment">//使用自定义工具类</span></span><br><span class="line">        <span class="comment">//boolean result = xMemcachedUtil.add("xmemcached","使用 xmemcached 存储数据",0);</span></span><br><span class="line"></span><br><span class="line">        System.out.println(<span class="string">"保存结果 result= "</span>+result);</span><br><span class="line"></span><br><span class="line">        <span class="comment">//从缓存中获取数据</span></span><br><span class="line">        String value = memcachedClient.get(<span class="string">"xmemcached"</span>);</span><br><span class="line">        System.out.println(<span class="string">"获取value="</span> + value);</span><br><span class="line">        <span class="keyword">return</span> value;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@GetMapping</span>(<span class="string">"delete/str"</span>)</span><br><span class="line">    <span class="function"><span class="keyword">public</span> Object <span class="title">deleteStr</span><span class="params">()</span> <span class="keyword">throws</span> Exception </span>&#123;</span><br><span class="line">        <span class="comment">//删除缓存中的数据</span></span><br><span class="line">        <span class="keyword">boolean</span> delete = memcachedClient.delete(<span class="string">"xmemcached"</span>);</span><br><span class="line">        System.out.println(<span class="string">"删除结果 delete: "</span>+delete);</span><br><span class="line"></span><br><span class="line">        <span class="comment">//再次获取数据</span></span><br><span class="line">        String value2 = memcachedClient.get(<span class="string">"xmemcached"</span>);</span><br><span class="line">        System.out.println(<span class="string">"获取 value2="</span> + value2);</span><br><span class="line">        <span class="keyword">return</span> <span class="string">"执行成功!"</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">//操作对象</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * 对象保存-对象需要序列化</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span></span></span><br><span class="line"><span class="comment">     * <span class="doctag">@return</span> java.lang.Object</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@GetMapping</span>(<span class="string">"save/object"</span>)</span><br><span class="line">    <span class="function"><span class="keyword">public</span> Object <span class="title">saveObject</span><span class="params">()</span> <span class="keyword">throws</span> Exception </span>&#123;</span><br><span class="line"></span><br><span class="line">        UserDTO userDTO =<span class="keyword">new</span> UserDTO();</span><br><span class="line">        userDTO.setId(<span class="string">"1"</span>);</span><br><span class="line">        userDTO.setAge(<span class="number">21</span>);</span><br><span class="line">        userDTO.setUsername(<span class="string">"李四"</span>);</span><br><span class="line"></span><br><span class="line">        <span class="comment">//保存到Memcached缓存中</span></span><br><span class="line">        <span class="keyword">boolean</span> result = memcachedClient.set(<span class="string">"userdto"</span>, <span class="number">0</span>, userDTO);</span><br><span class="line">        System.out.println(<span class="string">"保存结果 result= "</span>+result);</span><br><span class="line"></span><br><span class="line">        <span class="comment">//从缓存中获取数据</span></span><br><span class="line">        UserDTO userdto = memcachedClient.get(<span class="string">"userdto"</span>);</span><br><span class="line">        System.out.println(<span class="string">"获取userdto="</span> + userdto);</span><br><span class="line">        <span class="keyword">return</span> userdto;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@GetMapping</span>(<span class="string">"delete/object"</span>)</span><br><span class="line">    <span class="function"><span class="keyword">public</span> Object <span class="title">deleteObject</span><span class="params">()</span> <span class="keyword">throws</span> Exception </span>&#123;</span><br><span class="line">        <span class="comment">//删除缓存中的数据</span></span><br><span class="line">        <span class="keyword">boolean</span> delete = memcachedClient.delete(<span class="string">"userdto"</span>);</span><br><span class="line">        System.out.println(<span class="string">"删除结果 delete: "</span>+delete);</span><br><span class="line"></span><br><span class="line">        <span class="comment">//再次从缓存中获取数据</span></span><br><span class="line">        UserDTO userdto = memcachedClient.get(<span class="string">"userdto"</span>);</span><br><span class="line">        System.out.println(<span class="string">"获取userdto="</span> + userdto);</span><br><span class="line">        <span class="keyword">return</span> userdto;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure><h2 id="github-地址："><a href="#github-地址：" class="headerlink" title="github 地址："></a>github 地址：</h2><ul><li><a href="https://links.jianshu.com/go?to=https%3A%2F%2Fgithub.com%2Fzhengjiaao%2Fspring5x" target="_blank" rel="noopener">https://github.com/zhengjiaao/spring5x</a></li></ul><h2 id="博客地址"><a href="#博客地址" class="headerlink" title="博客地址"></a>博客地址</h2><ul><li>简书：<a href="https://www.jianshu.com/u/70d69269bd09" target="_blank" rel="noopener">https://www.jianshu.com/u/70d69269bd09</a></li><li>掘金： <a href="https://juejin.im/user/5d82daeef265da03ad14881b/posts" target="_blank" rel="noopener">https://juejin.im/user/5d82daeef265da03ad14881b/posts</a></li></ul></div><div class="popular-posts-header"><p style="font-size:18px;color:red;margin:0 0 5px 0">相关文章推荐：</p></div><ul class="popular-posts"><li class="popular-posts-item"><div class="popular-posts-title"><a href="\posts\2680579140.html" 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